The optical response of these materials is dominated by excitons [1]},
and optically bright exciton absorption peaks have been shown to correspond
to the excitation of states in the \(ns\)  series [2]}, [3]}.
As for \(np\) –series excitons, these can be controlled magnetically
despite being optically dark in TMDs [4]}. The selection rules of excitons in TMDs for absorption experiments have been recently thoroughly studied[5]}.
